carbon and nitrogen nutrition
crop nitrogen nutrition
nitrogen index dynamics
Nitrogen nutrition
氮营养
氮素营养
氮素营养性状
N素营养
铁营养
水稻叶片
氮源
氮素
水稻
N肥
氮
nitrogen nutrition characteristics
nitrogen nutrition diagnosis
nitrogen nutrition efficiency
nitrogen nutrition level
Soil nitrogen nutrition
integral index index of connectivity
combined application of organic nitrogen and nitrogen
nitrogen balance nitrogen equilibium
nitrogen effect to soil nitrogen
Real-time nitrogen management and site-specific nitrogen management
drought intensity index and area index